Combined needle-carrier and loop-holder for sewing-machines.



E. ERICKSON.

COMBINED NEEDLE CARRIER AND LOOP HOLDER FOR SEWING MACHINES.

APPLICATION FILED JULY 11. 1914.

1 l 4,55, Patented Sept. 21, 1915.

F fiw EDWARD ERICKSON, or LYNN, MASSACHUSETTS, ASSIGNOIR. To VICTOR SHOE MACHINERY 00., 0F BOSTON, CI-IUSETTS.

MASSACHUSETTS, A CORPORATION OF MASSA- COMBINED N EEDLE-CARRIER LOOP-HOLDER FOR SEWING-MACHINES.

Specification of Letters Patent.

Original application filed December 28, 1912, Serial No. 739,056. Divided and this application filed July 17,

' 3 1914. Serial No. 852,096.

To all whom it may concern.

Be it known that I, EDWARD ERIOKSON, a subject of the King of Sweden, and a resident of Lynn, in the county of Essex and State of lVIassachusetts, have invented certain new and useful Improvements in Combined Needle-Carriers and Loop-Holders for Sewing-Machines, of which the following is a specification.

This invention relates to machines for sewing heavy material such as leather, and refers particularly to that type of such machines known as welt sewing machines.

The object of the invention is to provide a combined needle carrier and loop holder for lock-stitch sewing machines, such as is shoWn and described in another application of mine filed December 28, 1912,. Serial No. 739,056, of which this application is a division.

The invention consists in certain novel features of construction and arrangement of parts which will be fully understood by reference to the description of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a sectional elevation of a sewing machine embodying the principles of the present invention. Fig. 2 represents an elevation of the needle carrier from the side opposite to that shown in Fig. 1, and Fig. 3 represents a diagram showing the path of the looper relative to the needle and the hook on the needle carrier.

Similar characters designate like parts th oughout the several figures of the draw: lngs.

The base 30 of the machine is provided with two uprights only one of which 31 is shown in the drawings. The main shaft 34 is suitably supported in the framework of the machine, and is revoluble in bearings therein. Said main shaft has at one end a spiral gear 39 meshing with a pinion 40 secured to a shaft 41 mounted in a bracket 42 supported by the top of the standard 31. The gear 39 and pinion 10 operate suitable mechanisms for driving the shuttle 53, but as these mechanisms form no part of the present invention they are not herein described.

The machine is provided with the usual work support 71 and a presser foot adapted while the shank 208 to hold the work in position on said work support.

The needle 151 has its carrier 152 (Fig. 1) pivotally mounted on the fixed pin 15.3. The carrier 152 has a rearwardly projecting arm 154 connected by a link 155 with an arm 156 which is fixedly but adjustably secured to one end of a rock shaft 157 mounted in a disk 159 carried by a rock shaft 160 which is mounted to oscillate in a bearing 161 of the frame of the machine. Suitable movement about the pin 153 is imparted to the needle carrier 152 by means of the link 155, but the operating mechanisms therefor are not described, as they form no part of the present invention.

The looper 201 comprises a tubular'memher at the outer end of'an arm 202 (Fig. 1). said ar m projecting from a hub 203 mounted to oscillate laterally by means of slots in said-hub, which slots receive trunnions 204 contained within the hub 203, said block 205 being pivotally supported upon a pin 206 prO ecting inwardly from the standard 31. This mounting of the hub 203 is for the purpose of enabling it to have universal move ment. An arm207 projecting rearwardly from the hub 203 is provided with a ball and socket joint connection 208 with one end of a lever 209 which is mounted on a universal pivot 210, said lever 209 having a roll 211 which is acted upon by a cam 212 carried by the Shaft 34. The ball end of the connection is positioned in a socket in the arm 207 thereof has a. sliding fit in the lever 209 as shown in Fig. 1.

s the universal mounting of the lever 209, like that described for the hub 203, may be of any preferred not necessary to illustrate it in detail.

A cam 212 is peripherally formed to act ppon the roll 211 so as to impart to the looper its in-and-out movements, a suitably connected spring 213 (Fig. 1) causing the lever to follow such movements of the cam. Said cam is formed with a peripheral groove (Fig. 1) which receives a roll 215 indicated by dotted lines in Fig. 1, said roll being mounted on a pin carried by the lever 209. The peripheral cam groove imparts to the lever the motions which transmit lateral m0- well-known type, it is Patented Sept. 21, 1915. I

"projecting from a fulcrum block 205 that is tions to the looper. The combined cam action is such of course that the looper has no movements in a straight line, said looper having in practice a motion Which might be best described as following the pathsome- What of the numeral 6 (as indicated in Fig. 3) so as to carry the thread around the needle and then to move to a greater distance from the needle, and then return.

As indicated in Fig. 1, a suitable oscillating guide for the needle is indicated at 225. I do not show the details of the mounting of said needle guide so that it can oscillate, asthe same may be constructed as in my application 6%,769, filed August 18, 1911.

' To hold the loop of thread aside for the needle to pass through the loop formed by the looper 201, I provide a simple and durable device consisting of a projection or hook 226 (Fig. 1) Which is connected to the needle carrier 152 in such position that the end of said hook or loop holder will be in advance of the tip of the needle. In operation this hook moves to a low enough point so that the looper 201 will carry the thread around it just before the needle enters the loop. The movement of the looper 201 is such that the thread is carried from the point a (Fig. 3) around the hook 226 and then around the needle 151 to the point I), (Fig. 3) thereby depositing the thread on the barb. The looper 201 returns from b the loop of said thread on the hook 226 will be cast therefrom by the thread coming in a contact With the under side of the Work support 71. The provision of the hook 226 provides a simple means for insuring the proper placing of the thread upon the needle 151 and retaining the loop spread until said loop has been drawn through the Work.

It is believed that the operation and many advantages of this invention Will be fully understood from the foregoing description. 1

Having thus described my invention, I claim:

1. Ina sewing machine, an oscillating needle carrier, a hook projecting from said carrier, and a looper for carrying the thread around said needle and hook.

2. In a sewing machine, an oscillating carrier having a needle and a hook projecting therefrom, said hook projecting beyond the pointof the needle, and a looper having means for moving it around both the. needle and said hook.

Signed by me at Boston, Mass, this 18th day of June, 1914.

v EDWVARD ERICKSON.

Witnesses;

EDWARD F. ALLEN, WALTER E. LOMBARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. I 

